<script setup>
import { getCategoryFilterAPI, getSubCategoryAPI } from "@/apis/category";
import { onMounted, ref } from "vue";
import { onBeforeRouteUpdate, useRoute } from "vue-router";
import GoodsItem from "@/views/home/components/GoodsItem.vue";
const route = useRoute();
let filterData = ref({});
const getFilterData = async (id) => {
  let res = await getCategoryFilterAPI(id);
  filterData.value = res.result;
  // console.log(res);
};
// 获取基础列表数据
const goodList = ref([]);
const reqData = ref({
  categoryId: route.params.id,
  page: 1,
  pageSize: 20,
  sortFiled: `pubLishTime`,
});
const getGoodList = async () => {
  let res = await getSubCategoryAPI(reqData.value);
  // console.log(res);
  goodList.value = res.result.items;
};
// tab切换
const tabChange = (e) => {
  getGoodList();
};
onMounted(() => {
  getFilterData(route.params.id);
  getGoodList();
});
// 希望路由参数变化时，可以把分类数据接口重新发送
onBeforeRouteUpdate((to, from) => {
  // 存在问题：使用最新的路由参数请求最新的分类数据
  //   getCategory(to.params.id);
  // console.log(to);
});
// 加载更多
const disabled = ref(false);
const load = async () => {
  //   console.log('加载更多数据咯')
  // 获取下一页的数据
  reqData.value.page++;
  const res = await getSubCategoryAPI(reqData.value);
  goodList.value = [...goodList.value, ...res.result.items];
  // 加载完毕 停止监听
  if (res.result.items.length === 0) {
    disabled.value = true;
  }
};
</script>

<template>
  <div class="container">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item :to="{ path: `/category/${filterData.parentId}` }"
          >{{ filterData.parentName }}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ filterData.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <div class="sub-container">
      <el-tabs v-model="reqData.sortFiled" @tab-change="tabChange">
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>
      <div
        class="body"
        v-infinite-scroll="load"
        :infinite-scroll-disabled="disabled"
      >
        <!-- 商品列表-->
        <GoodsItem
          v-for="goods in goodList"
          :key="goods.id"
          :goods="goods"
        ></GoodsItem>
      </div>
    </div>
  </div>
</template>

<style lang="scss" scoped>
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }
}
</style>
